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Mini Shell
Mini Shell
/* MIT License
*
* Copyright (c) 2004 Daniel Stenberg
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* SPDX-License-Identifier: MIT
*/
#ifndef __SETUP_ONCE_H
#define __SETUP_ONCE_H
/********************************************************************
* NOTICE *
* ======== *
* *
* Content of header files lib/setup_once.h and ares/setup_once.h *
* must be kept in sync. Modify the other one if you change this. *
* *
********************************************************************/
/*
* Inclusion of common header files.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <ctype.h>
#ifdef HAVE_ERRNO_H
# include <errno.h>
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef NEED_MALLOC_H
# include <malloc.h>
#endif
#ifdef NEED_MEMORY_H
# include <memory.h>
#endif
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef HAVE_TIME_H
# include <time.h>
#endif
#ifdef WIN32
# include <io.h>
# include <fcntl.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef __hpux
# if !defined(_XOPEN_SOURCE_EXTENDED) || defined(_KERNEL)
# ifdef _APP32_64BIT_OFF_T
# define OLD_APP32_64BIT_OFF_T _APP32_64BIT_OFF_T
# undef _APP32_64BIT_OFF_T
# else
# undef OLD_APP32_64BIT_OFF_T
# endif
# endif
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef __hpux
# if !defined(_XOPEN_SOURCE_EXTENDED) || defined(_KERNEL)
# ifdef OLD_APP32_64BIT_OFF_T
# define _APP32_64BIT_OFF_T OLD_APP32_64BIT_OFF_T
# undef OLD_APP32_64BIT_OFF_T
# endif
# endif
#endif
/*
* Definition of timeval struct for platforms that don't have it.
*/
#ifndef HAVE_STRUCT_TIMEVAL
struct timeval {
long tv_sec;
long tv_usec;
};
#endif
/*
* If we have the MSG_NOSIGNAL define, make sure we use
* it as the fourth argument of function send()
*/
#ifdef HAVE_MSG_NOSIGNAL
# define SEND_4TH_ARG MSG_NOSIGNAL
#else
# define SEND_4TH_ARG 0
#endif
#if defined(__minix)
/* Minix doesn't support recv on TCP sockets */
# define sread(x, y, z) \
(ares_ssize_t) \
read((RECV_TYPE_ARG1)(x), (RECV_TYPE_ARG2)(y), (RECV_TYPE_ARG3)(z))
#elif defined(HAVE_RECV)
/*
* The definitions for the return type and arguments types
* of functions recv() and send() belong and come from the
* configuration file. Do not define them in any other place.
*
* HAVE_RECV is defined if you have a function named recv()
* which is used to read incoming data from sockets. If your
* function has another name then don't define HAVE_RECV.
*
* If HAVE_RECV is defined then RECV_TYPE_ARG1, RECV_TYPE_ARG2,
* RECV_TYPE_ARG3, RECV_TYPE_ARG4 and RECV_TYPE_RETV must also
* be defined.
*
* HAVE_SEND is defined if you have a function named send()
* which is used to write outgoing data on a connected socket.
* If yours has another name then don't define HAVE_SEND.
*
* If HAVE_SEND is defined then SEND_TYPE_ARG1, SEND_QUAL_ARG2,
* SEND_TYPE_ARG2, SEND_TYPE_ARG3, SEND_TYPE_ARG4 and
* SEND_TYPE_RETV must also be defined.
*/
# if !defined(RECV_TYPE_ARG1) || !defined(RECV_TYPE_ARG2) || \
!defined(RECV_TYPE_ARG3) || !defined(RECV_TYPE_ARG4) || \
!defined(RECV_TYPE_RETV)
/* */
Error Missing_definition_of_return_and_arguments_types_of_recv
/* */
# else
# define sread(x, y, z) \
(ares_ssize_t) recv((RECV_TYPE_ARG1)(x), (RECV_TYPE_ARG2)(y), \
(RECV_TYPE_ARG3)(z), (RECV_TYPE_ARG4)(0))
# endif
#else /* HAVE_RECV */
# ifndef sread
/* */
Error Missing_definition_of_macro_sread
/* */
# endif
#endif /* HAVE_RECV */
#if defined(__minix)
/* Minix doesn't support send on TCP sockets */
# define swrite(x, y, z) \
(ares_ssize_t) \
write((SEND_TYPE_ARG1)(x), (SEND_TYPE_ARG2)(y), (SEND_TYPE_ARG3)(z))
#elif defined(HAVE_SEND)
# if !defined(SEND_TYPE_ARG1) || !defined(SEND_QUAL_ARG2) || \
!defined(SEND_TYPE_ARG2) || !defined(SEND_TYPE_ARG3) || \
!defined(SEND_TYPE_ARG4) || !defined(SEND_TYPE_RETV)
/* */
Error Missing_definition_of_return_and_arguments_types_of_send
/* */
# else
# define swrite(x, y, z) \
(ares_ssize_t) send((SEND_TYPE_ARG1)(x), (SEND_TYPE_ARG2)(y), \
(SEND_TYPE_ARG3)(z), (SEND_TYPE_ARG4)(SEND_4TH_ARG))
# endif
#else /* HAVE_SEND */
# ifndef swrite
/* */
Error Missing_definition_of_macro_swrite
/* */
# endif
#endif /* HAVE_SEND */
#if 0
# if defined(HAVE_RECVFROM)
/*
* Currently recvfrom is only used on udp sockets.
*/
# if !defined(RECVFROM_TYPE_ARG1) || !defined(RECVFROM_TYPE_ARG2) || \
!defined(RECVFROM_TYPE_ARG3) || !defined(RECVFROM_TYPE_ARG4) || \
!defined(RECVFROM_TYPE_ARG5) || !defined(RECVFROM_TYPE_ARG6) || \
!defined(RECVFROM_TYPE_RETV)
/* */
Error Missing_definition_of_return_and_arguments_types_of_recvfrom
/* */
# else
# define sreadfrom(s, b, bl, f, fl) \
(ares_ssize_t) \
recvfrom((RECVFROM_TYPE_ARG1)(s), (RECVFROM_TYPE_ARG2 *)(b), \
(RECVFROM_TYPE_ARG3)(bl), (RECVFROM_TYPE_ARG4)(0), \
(RECVFROM_TYPE_ARG5 *)(f), (RECVFROM_TYPE_ARG6 *)(fl))
# endif
# else /* HAVE_RECVFROM */
# ifndef sreadfrom
/* */
Error Missing_definition_of_macro_sreadfrom
/* */
# endif
# endif /* HAVE_RECVFROM */
# ifdef RECVFROM_TYPE_ARG6_IS_VOID
# define RECVFROM_ARG6_T int
# else
# define RECVFROM_ARG6_T RECVFROM_TYPE_ARG6
# endif
#endif /* if 0 */
/*
* Function-like macro definition used to close a socket.
*/
#if defined(HAVE_CLOSESOCKET)
# define sclose(x) closesocket((x))
#elif defined(HAVE_CLOSESOCKET_CAMEL)
# define sclose(x) CloseSocket((x))
#elif defined(HAVE_CLOSE_S)
# define sclose(x) close_s((x))
#else
# define sclose(x) close((x))
#endif
/*
* Uppercase macro versions of ANSI/ISO is*() functions/macros which
* avoid negative number inputs with argument byte codes > 127.
*/
#define ISSPACE(x) (isspace((int)((unsigned char)x)))
#define ISDIGIT(x) (isdigit((int)((unsigned char)x)))
#define ISALNUM(x) (isalnum((int)((unsigned char)x)))
#define ISXDIGIT(x) (isxdigit((int)((unsigned char)x)))
#define ISGRAPH(x) (isgraph((int)((unsigned char)x)))
#define ISALPHA(x) (isalpha((int)((unsigned char)x)))
#define ISPRINT(x) (isprint((int)((unsigned char)x)))
#define ISUPPER(x) (isupper((int)((unsigned char)x)))
#define ISLOWER(x) (islower((int)((unsigned char)x)))
#define ISASCII(x) (isascii((int)((unsigned char)x)))
#define ISBLANK(x) \
(int)((((unsigned char)x) == ' ') || (((unsigned char)x) == '\t'))
#define TOLOWER(x) (tolower((int)((unsigned char)x)))
/*
* Macro WHILE_FALSE may be used to build single-iteration do-while loops,
* avoiding compiler warnings. Mostly intended for other macro definitions.
*/
#define WHILE_FALSE while (0)
#if defined(_MSC_VER) && !defined(__POCC__)
# undef WHILE_FALSE
# if (_MSC_VER < 1500)
# define WHILE_FALSE while (1, 0)
# else
# define WHILE_FALSE \
__pragma(warning(push)) __pragma(warning(disable : 4127)) while (0) \
__pragma(warning(pop))
# endif
#endif
/*
* Macro used to include code only in debug builds.
*/
#ifdef DEBUGBUILD
# define DEBUGF(x) x
#else
# define DEBUGF(x) \
do { \
} \
WHILE_FALSE
#endif
/*
* Macro used to include assertion code only in debug builds.
*/
#if defined(DEBUGBUILD) && defined(HAVE_ASSERT_H)
# define DEBUGASSERT(x) assert(x)
#else
# define DEBUGASSERT(x) \
do { \
} \
WHILE_FALSE
#endif
/*
* Macro SOCKERRNO / SET_SOCKERRNO() returns / sets the *socket-related* errno
* (or equivalent) on this platform to hide platform details to code using it.
*/
#ifdef USE_WINSOCK
# define SOCKERRNO ((int)WSAGetLastError())
# define SET_SOCKERRNO(x) (WSASetLastError((int)(x)))
#else
# define SOCKERRNO (errno)
# define SET_SOCKERRNO(x) (errno = (x))
#endif
/*
* Macro ERRNO / SET_ERRNO() returns / sets the NOT *socket-related* errno
* (or equivalent) on this platform to hide platform details to code using it.
*/
#if defined(WIN32) && !defined(WATT32)
# define ERRNO ((int)GetLastError())
# define SET_ERRNO(x) (SetLastError((DWORD)(x)))
#else
# define ERRNO (errno)
# define SET_ERRNO(x) (errno = (x))
#endif
/*
* Portable error number symbolic names defined to Winsock error codes.
*/
#ifdef USE_WINSOCK
# undef EBADF /* override definition in errno.h */
# define EBADF WSAEBADF
# undef EINTR /* override definition in errno.h */
# define EINTR WSAEINTR
# undef EINVAL /* override definition in errno.h */
# define EINVAL WSAEINVAL
# undef EWOULDBLOCK /* override definition in errno.h */
# define EWOULDBLOCK WSAEWOULDBLOCK
# undef EINPROGRESS /* override definition in errno.h */
# define EINPROGRESS WSAEINPROGRESS
# undef EALREADY /* override definition in errno.h */
# define EALREADY WSAEALREADY
# undef ENOTSOCK /* override definition in errno.h */
# define ENOTSOCK WSAENOTSOCK
# undef EDESTADDRREQ /* override definition in errno.h */
# define EDESTADDRREQ WSAEDESTADDRREQ
# undef EMSGSIZE /* override definition in errno.h */
# define EMSGSIZE WSAEMSGSIZE
# undef EPROTOTYPE /* override definition in errno.h */
# define EPROTOTYPE WSAEPROTOTYPE
# undef ENOPROTOOPT /* override definition in errno.h */
# define ENOPROTOOPT WSAENOPROTOOPT
# undef EPROTONOSUPPORT /* override definition in errno.h */
# define EPROTONOSUPPORT WSAEPROTONOSUPPORT
# define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT
# undef EOPNOTSUPP /* override definition in errno.h */
# define EOPNOTSUPP WSAEOPNOTSUPP
# define EPFNOSUPPORT WSAEPFNOSUPPORT
# undef EAFNOSUPPORT /* override definition in errno.h */
# define EAFNOSUPPORT WSAEAFNOSUPPORT
# undef EADDRINUSE /* override definition in errno.h */
# define EADDRINUSE WSAEADDRINUSE
# undef EADDRNOTAVAIL /* override definition in errno.h */
# define EADDRNOTAVAIL WSAEADDRNOTAVAIL
# undef ENETDOWN /* override definition in errno.h */
# define ENETDOWN WSAENETDOWN
# undef ENETUNREACH /* override definition in errno.h */
# define ENETUNREACH WSAENETUNREACH
# undef ENETRESET /* override definition in errno.h */
# define ENETRESET WSAENETRESET
# undef ECONNABORTED /* override definition in errno.h */
# define ECONNABORTED WSAECONNABORTED
# undef ECONNRESET /* override definition in errno.h */
# define ECONNRESET WSAECONNRESET
# undef ENOBUFS /* override definition in errno.h */
# define ENOBUFS WSAENOBUFS
# undef EISCONN /* override definition in errno.h */
# define EISCONN WSAEISCONN
# undef ENOTCONN /* override definition in errno.h */
# define ENOTCONN WSAENOTCONN
# define ESHUTDOWN WSAESHUTDOWN
# define ETOOMANYREFS WSAETOOMANYREFS
# undef ETIMEDOUT /* override definition in errno.h */
# define ETIMEDOUT WSAETIMEDOUT
# undef ECONNREFUSED /* override definition in errno.h */
# define ECONNREFUSED WSAECONNREFUSED
# undef ELOOP /* override definition in errno.h */
# define ELOOP WSAELOOP
# ifndef ENAMETOOLONG /* possible previous definition in errno.h */
# define ENAMETOOLONG WSAENAMETOOLONG
# endif
# define EHOSTDOWN WSAEHOSTDOWN
# undef EHOSTUNREACH /* override definition in errno.h */
# define EHOSTUNREACH WSAEHOSTUNREACH
# ifndef ENOTEMPTY /* possible previous definition in errno.h */
# define ENOTEMPTY WSAENOTEMPTY
# endif
# define EPROCLIM WSAEPROCLIM
# define EUSERS WSAEUSERS
# define EDQUOT WSAEDQUOT
# define ESTALE WSAESTALE
# define EREMOTE WSAEREMOTE
#endif
/*
* Actually use __32_getpwuid() on 64-bit VMS builds for getpwuid()
*/
#if defined(__VMS) && defined(__INITIAL_POINTER_SIZE) && \
(__INITIAL_POINTER_SIZE == 64)
# define getpwuid __32_getpwuid
#endif
/*
* Macro argv_item_t hides platform details to code using it.
*/
#ifdef __VMS
# define argv_item_t __char_ptr32
#else
# define argv_item_t char *
#endif
/*
* We use this ZERO_NULL to avoid picky compiler warnings,
* when assigning a NULL pointer to a function pointer var.
*/
#define ZERO_NULL 0
#endif /* __SETUP_ONCE_H */
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